Improved grain-conveyer



h .aeo af-.tam gm mi D 'AYIID L. vBARTLETT, OF ROCKFIORD, ILLINOIS.

\ Leners Batam No. 85,782, dated .Tama/ry 12, 1869. I

IMPROVED GRAIN-CONVEYER The Schedule referred to in these Letters Patent and making part of tho lama.

Vfollowing is a full and exact description of the same,

reference being had to the accompan'ying drawings, and to the letters of reference marked thereon.y

Thisinvention relates to certain improvements in screW-conveyers for grain,`and consists mainly in the manner of supporting the shafts, and coupling them together.

The details of construction, and manner of operation, will be fully described hereinafter.

In vthe drawings- Figure lisa perspective view of my invention;

Eigure 2 is a perspective view of the coupling-device; and

Figure 3, a transverse vertical section through the line :v-, fig. 1. l

To enable those skilled in the art to which my iuvention appertains, to make and use the same, I will proceed to describe its construction and'operation.

.The object of. this invention is to finnish a secure bearing and coupling for the shafts'of; grain orlourconveyers, or any other usethat itpmay be'applied to, Without breaking the continuity of the.screw.`

The ordinary arrangement now in use is Aopen to two objections: first, in case of sticks or other obstructions getting into the conveyer, they are liable to catch up the coupling and tear out the flights or threadsof the screw; second, the shafts, when the conveyer is full of grain, are liable to spring out of line. These objec.

tions are obviated by my improved arrangement.

A represents' the triangle or box through which the grain is conveyed.

B represents the shaft, upon which are-placed the flights b b, in the ordinary manner.

This shaft maybe supported at each eXtreme end by beariugsofthe ordinary construction, if desired, the grain being received above at one end, and discharged below at the other.

Any other s table arrangement, of course. can be made, which will accommodate the peculiar circumstances of the `case.

The different parts of the shaft are coupled together and supported by means of the joint O, the construction of which is clearly shown in fig. 2.

This consists of a ring, c, screw-threads, c, and hub, c?, in which latter are firmly fixed the projections c?, ttin g snugly into the sockets in the ends of the shafts to be connected.

D represents ,a semicircular `bearing-ring, securely attached to the bottom of the boX,'as shown, which may or may not be provided with friction-wheels, as is desired.

D represents a similar ringnsecurely attached to a beam extending across the top ofthe triangle, as shown.l

This beam should be removable, in order to permit the shafting to be putin place or, taken down, when desired. i

When all the parts are in place, the ring c, of joint O, rests upon and is held bythe bearing-rings D D. The joint O is also so arranged, relatively to the con tiguous-euds of the shafting, that its screw-threads coincide with the ights upon the latter, so that the screw is continuousthroughout the entirelength of the conveyer.' n

4By this arrangement, the catching of obstructions at any part is rendered impossible, and the shating also is so securely held upon all sides that it cannot, by any means, be sprung ou't of line.

This conveyer, ofcourse, may be used for any suitable purpose.

Having thus fully'described my invention,

What I claim, and desire to secure by Letters Pat ent of the United States, is` n The joint O, constructed as described, in combination with the bearings D D', when used in connection with a grain-conveyer, substantiallyas described.

vThis speciication'signed and witnessed, this 19th day of September, 1868. DAVID L. BARTLETT.-

Witnesses:

H. G. CLARK, G. W. FORD. 

